US1321673A - Balanced valve - Google Patents

Description

J. R. SAYWARD.

BALANCED VAILVE.

APPLICATION FILED JAN-28.1919.

21,673. Patented Nov. 11, 1919.

i Z I '1 1/ 7 7 6 I /0 3 i i 7 l6 WITNESSES AS" INVENTOI? &' .15. a ward gah izaze By 7 A TTORNEVS JOSEPH ROBINSON SAYWARD, OF LANCASTER, NEW HAMPSHIRE.

BALANCED VALVE.

Specification of Letters Patent.

Patented Nov. 11, 1919.

Application filed January 28, 1919. Serial No. 273,640.

To all whom it may concern:

Be it known that I, J osnrn R. SAYWARD, a citizen of the United States, and a resident of Lancaster, in the county of Coos and State of New Hampshire, have invented a new and Improved Balanced Valve, of which the following is a full, clear, and exact description.

This invention relates to valves for controlling the flow of fluids, and has for an object to provide an improved valve of the type known as balanced valves. The nature of the invention will hereinafter more fully appear.

In the accompanying drawing, which forms a part of this specification, is shown an illustrative embodiment of the invention particularly designed for use in flushing tanks to control the flow of water into the tank and in which the valve is controlled automatically by a float within the tank.

In the drawing, Figure 1 is a vertical, cen tral sectional View of the valve and of the flushing tank to which the valve is shown as applied; and

Fig. 2 is a sectional view taken on the line 22 of Fig. 1 looking in the direction of the arrows.

The valve shown for the purposes of illustration comprises a T-shaped valve casing 1 bored from side to side to provide a slideway 2 in which slides a cylindrlcal valve sleeve 3. A valve seat 4 faces the end of the slideway, and against it the end of the valve sleeve seats to close a lateral valve port 5 adjacent thereto. The valve casing is provided with suitable connections for the attachment of inlet and outlet pipes.

The flow may be in either direction through the valve. In the construction shown, the valve is so connected to the supply pipe that the flow of water is through the valve sleeve and out through the port in the direction shown by the arrows, at, b and c. The port 5, accordingly, is hereinafter referred to as the outlet port.

In operation, the valve sleeve 3 is moved to and fro to open and close the port 5. The operating mechanism shown for the purpose of illustration consists of a lever 6 pivoted to the valve casing and interengaging with the valve sleeve to provide an operative connection therewith. As shown, the valve sleeve is formed with a recess 7 which receives the end of the lever 6. The valve is shown as applied to the flushing tank 8 and is constructed and arranged to be automatically operated by a float 9 within the tank to maintain the water at a predetermined level therein. The float is connected by a rod 10 to the lever to form an operative part of the lever.

The slideway 2 need not be continuous. As shown, it is not continuous but supports thevalve sleeve only at the ends thereof, the central portion of the casting being en.- largecl as indicated at 11 to provide a freer flow of water through and from the valve. A passage 12 provides communication between the enlarged portion of the casing and the outlet port 5, said passage being formed by a concentric wall inwardly spaced from the valve casing 1 to which it is joined at the top, at spaced points, to provide a slot for receiving the lever 6 therethrough. A discharge outlet extends downwardly from the enlargement 11 as shown.

The sliding joint between the valve sleeve and the slideway should be fluid tight, espe cially at the end of the valve sleeve remote from the valve seat. Accordingly, a packing gland is provided, and in the construction shown this is arranged at the end of the valve sleeve and carried thereby, as indicated at 13.

In order that the fluid pressure upon the valve sleeve tending to move the same in one direction or the other may be as nearly balanced as possible, I prefer to bevel the seating end outwardly as shown at 14;. This causes the packed end of the sleeve to be balanced by the pressure against the bevel, as will be well understood; such bevel also provides a desirable narrow seating edge.

A removable cap 15 forms the valve seat. For convenience of description, the cap is considered as a part of the valve casing. A resilient washer 16 is preferably provided to form a resilient seat for the end of the valve sleeve. The washer shown also extends between the opposing faces of the cap and the end of the casting to seal the joint therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent is: I

1. A valve comprising a valve casing having a slideway, a valve seat facing said slideway at one end thereof, a port between said valve seat and the end of the slideway, and a passaged valve sleeve slidable in said slideway toward and from said valve seat slideway toward and from said valve seat and formed to seat tightly thereagainst to close andopen said port, said casing and slideway cooperating to form a passage in continuation of the port and to form a slot, a and an aotuating lever pivoted on said casing and operatively connected with said valve sleeve through said slot.

8. A valve comprising a T-shaped valve casingbored from side to side toprovide a slideway and having a valve seat facing said slideway at one end thereof but spaced therefrom to provide a port, said slideway being spaced from the wall of the casing at oneend to provide a passage connecting the port with the casing outlet,' a cylindrical sleeve valve slidable in said slideway toward andfroin said valve seat to close and open said port and a packing gland in the end of said valve sleeve opposite the seating end thereof to provide a fluid-tight joint between said valve sleeve and the slideway.

,4. A valve comprising a valve casing bored to provide a slideway and having a removable cap forming a valve seat at one end'of and facing said slideway, a washer interposed between said removable cap and the body of the valve casing, and a sleeve valve slidable in said slideway and seating against'said washer, said washer forming a packing for the joint between said removable cap and the body portion of said valve casing and also providing a yielding seat for the end of said valve sleeve, a passageway between the slideway and the casing at theadjacent end of the valve near its seat.

5. A valve comprising a valve casing bored from one end to provide an inlet and a slideway and presenting a valve seat in a plane transverse to said slideway and facing said slideway at the end farthest from the inlet, with a lateral outlet port adjacent said valve seat, and a valve sleeve slidable in the slideway through which fluid may flow from the inlet, saidvalve sleeve adapted to seat against said valve seat to control the flow of fluid through the outlet port, said Valve casing having a discharge outlet intermediate its ends and a passage surrounding the valve sleeve and between said slideway and casing adjacent to said seat and connecting the outlet port with the discharge outlet.

JOSEPH ROBINSON SAYWARD.

, Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents;

Washington, D; G.

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